Average annual temperature is 22.8 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: 15.7 °C
Number of sunny days: 123 days
Number of rainy days: 242 days
Look at detailed online map of Onya
* Weather data for Onya Kenya is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 32.1 | 33.3 | 32.2 | 29.1 | 29.8 | 29.2 | 28.8 | 30.4 | 29.8 | 31.3 | 28.5 | 29.4 |
| Average daytime temperature (°C) | 29.0 | 30.6 | 27.3 | 27.1 | 27.9 | 27.4 | 27.5 | 28.5 | 27.7 | 28.3 | 26.4 | 27.2 |
| Average temperature (°C) | 22.9 | 24.4 | 22.5 | 22.4 | 22.8 | 22.5 | 22.2 | 23.1 | 22.7 | 23.4 | 22.2 | 22.8 |
| Average night temperature (°C) | 17.6 | 19.0 | 18.7 | 18.7 | 18.6 | 18.4 | 17.6 | 18.4 | 18.6 | 19.2 | 18.9 | 18.9 |
| Absolute minimum temperature (°C) | 16.2 | 17.7 | 17.8 | 17.7 | 17.5 | 17.3 | 15.7 | 17.1 | 17.5 | 18.0 | 17.9 | 17.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 11.3 | 11.3 | 10.3 | 10.1 | 10.8 | 10.8 | 10.9 | 11.1 | 10.9 | 10.7 | 10.2 | 10.7 |
| Precipitation (mm) | 6 | 24 | 202 | 207 | 62 | 51 | 17 | 33 | 103 | 160 | 219 | 88 |
| Sunny days | 25 | 20 | 5 | 4 | 9 | 7 | 20 | 17 | 6 | 6 | 1 | 3 |
| Rainy days | 6 | 8 | 26 | 26 | 22 | 23 | 11 | 14 | 24 | 25 | 29 | 28 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Onya is at